Two kinds of machining methods of function equation curve are introduced.
介绍了两种函数方程曲线加工方法。
NURBS curve equation has three kinds of the equivalence form, i. e. rational fraction, rational base function and homogeneous coordinate.
NURBS曲线方程具有三种等价形式：有理分式表示、有理基函数表示和齐次坐标表示。
Using gradient-descent methods the energy function is minimized and a curve evolution equation is obtained to segment the image.
运用梯度最陡下降法，推导出能量函数曲线演化方程，并应用于图像分割。
Based on the equation of soil water feature curve and the relationship between soil water feature curve and permeability function, the permeability function equation of unsaturated soil is derived.
从非饱和土土水特征曲线方程出发，根据渗透函数和土水特征曲线的关系，推导出了非饱和土渗透函数方程。
It is proved that the intersecting line of the two curved surface is space curve, and the equation is quartic implicit function with one unknown.
论证了两曲面的交线为空间曲线，其方程为一元四次隐函数关系式；
When a inverse function of monotone function can not show the explicit formula, the distribution density curve of continuous randon variable can be gained with a parametric equation.
当单调函数的反函数不能显性表示时，连续型随机变量的分布密度曲线仍可通过参数方程的形式获得。
According to the given experimental constant amplitude fatigue life group data, the three parameter exponential function equation can be adopted to describe the constant fatigue P-S-N curve.
对于给定的等幅疲劳成组试验数据，利用三参数幂函数方程来描述P - S - N等幅曲线。
Parabolic curve function, power function, Richards equation and single molecular equation, related tree height to diameter at breast height and widely used in forest gap model, were analysed.
为了更准确地描述树高与直径的关系，文章综合分析了广泛应用于林窗模型中的四个数学方程，即二次曲线、幂函数方程、理查德方程和单分子方程。
The analog equation between soil erosion resistance index and time is quadratic power function curve, whose correlation coefficient is above 0.9.
不同林分的抗蚀指数与时间的动态模拟关系为二次幂函数曲线，相关系数0.9以上。
In addition, it is found that the power function is the best fit equation of creep curve for 3-d braiding composites.
此外，还表明幂指函数可以较好地拟合三维编织复合材料的蠕变曲线。
In addition, it is found that the power function is the best fit equation of creep curve for 3-d braiding composites.
此外，还表明幂指函数可以较好地拟合三维编织复合材料的蠕变曲线。
应用推荐